Answer:
Common examples include carbon, sulfur, oxygen, iron, copper, aluminium. Elements are represented by symbols. Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction.
Explanation:
Substances can be categorised as either elements or compounds. Both of these are made up of atoms, the only difference is an element is made of one type of atom whereas compounds are made of two or more different types of atoms.
Nitrogen is the most important component of DNA, protein, enzymes etc. Its recycling in the atmosphere is necessary, beacuse free nitrogen in the atmosphere balance the atmosphere composition. In soil it is important for fertility needed for plant growth. In heterotrophs it is an essential component of organic compounds.
When houseflies try to imitate wasps, it is mullerian mimicry.
Answer: Evolution
Explanation:
Evolution can be defined as the change in the characteristics of the species over a period of time which basically relies on the process of the natural selection.
The characters that allows the survival of the organism is favored and is known as the survival of fittest which is a natural selection.
This is known as evolution in which the herbicide resistant plant is favored more and has developed over a period of time.
